Can you connect an Emerson TV Model LC320EM2 to a Toshiba Sound Bar with wireless subwoofer model #TY-WSB600? I have tried both the audio digital output and by HDMI; neither work. This TV is mounted in the wall of our camper so the signal is amplified thru a roof antenna.
Yes you can.
The TV has a SPDIF digital audio output which is a single RCA jack on the back of the TV.
You may have to turn the TV speakers off in the sound menu to get it working.
You can get the TV manual here https://www.manualslib.com/manual/504064/Emerson-Lc320em2.html
The soundbar has the correct input for that TV so you will only need a 75 ohm RCA to RCA cable. Most yellow RCA composite video cables will work. If you have to buy one get one labeled for digital audio.